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Title: Dedicated PSU for GPUs? Post by: polymorpher on July 23, 2011, 02:06:27 PM My PSU refuses to provide power to GPUs if 24pin and 8pin cable are not connected to motherboard. Is there anyway to trick the PSU so I could have a dedicated PSU for GPUs?
Title: Re: Dedicated PSU for GPUs? Post by: Xephan on July 23, 2011, 02:16:16 PM My PSU refuses to provide power to GPUs if 24pin and 8pin cable are not connected to motherboard. Is there anyway to trick the PSU so I could have a dedicated PSU for GPUs? ATX PSU are turned on when Pin 14 on the 24pin connector is pulled to ground. Pin 14 is usually wired with a green wire. So the simplest way to make this work, you just need to use a wire or something to connect that to any ground pin (black wire). A better way is to connect it to your main PSU so that it will turn on/off accordingly as well. Title: Re: Dedicated PSU for GPUs? Post by: polymorpher on July 23, 2011, 02:45:09 PM My PSU refuses to provide power to GPUs if 24pin and 8pin cable are not connected to motherboard. Is there anyway to trick the PSU so I could have a dedicated PSU for GPUs? ATX PSU are turned on when Pin 14 on the 24pin connector is pulled to ground. Pin 14 is usually wired with a green wire. So the simplest way to make this work, you just need to use a wire or something to connect that to any ground pin (black wire). A better way is to connect it to your main PSU so that it will turn on/off accordingly as well. Many thanks. Do you mean I can connect the "power on" pin to a ground pin on the same 24 pin connector (or any ground pin on any component)? I know nothing about PSU. Just want to make sure it is safe, so I wouldn't short circuit my PSU. Title: Re: Dedicated PSU for GPUs? Post by: Xephan on July 23, 2011, 02:53:16 PM My PSU refuses to provide power to GPUs if 24pin and 8pin cable are not connected to motherboard. Is there anyway to trick the PSU so I could have a dedicated PSU for GPUs? ATX PSU are turned on when Pin 14 on the 24pin connector is pulled to ground. Pin 14 is usually wired with a green wire. So the simplest way to make this work, you just need to use a wire or something to connect that to any ground pin (black wire). A better way is to connect it to your main PSU so that it will turn on/off accordingly as well. Many thanks. Do you mean I can connect the "power on" pin to a ground pin on the same 24 pin connector (or any ground pin on any component)? I know nothing about PSU. Just want to make sure it is safe, so I wouldn't short circuit my PSU. You can connect the 24pin to any ground pin, there are pull down resistors to prevent shorts. Anyway you can find guides online like this http://www.overclock.net/faqs/15751-info-can-i-use-two-power.html Title: Re: Dedicated PSU for GPUs? Post by: jthermit on July 23, 2011, 02:59:58 PM 1. Connect any load to your PSU (6-pin cable to your video card, for example )
2. Connect a power cable to your PSU and turn on the switch on it (if it exists) 3. Then connect together green and any black pin of 24-pin ATX connector. I usually use a unbent metal paper-clip. PSU will be in work until you disconnect green and black pins :) Title: Re: Dedicated PSU for GPUs? Post by: Xephan on July 23, 2011, 03:07:21 PM 3. Then connect together green and any black pin of 24-pin ATX connector. I usually use unbended metal paper-clip. Unbent paper clips are my favourite for doing this too :D |